1. School of Natural Sciences, National University of Sciences and Technology Islamabad, Sector H-12, Islamabad, Pakistan
2. Department of Mathematics, Faculty of Science, Phuket Rajabhat University (PKRU), 6 Thepkasattree Road, Raddasa, Phuket 83000, Thailand
3. Faculty of Science and Technology, Rajamangala University of Technology Suvarnabhumi, 7/1 Village No. 1, Nonthaburi 1 Road, Suan Yai Sub-district, Muang District, Nonthaburi 11000, Thailand